This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A328886 #16 Jan 26 2025 18:23:58
%S A328886 1444,213444,289444,925444,1077444,2137444,2365444,3849444,4153444,
%T A328886 6061444,6441444,8773444,9229444,11985444,12517444,15697444,16305444,
%U A328886 19909444,20593444,24621444,25381444,29833444,30669444,35545444,36457444,41757444,42745444,48469444
%N A328886 Squares that end in 444.
%C A328886 See A039685 for further information about these numbers.
%H A328886 Harvey P. Dale, <a href="/A328886/b328886.txt">Table of n, a(n) for n = 1..400</a>
%H A328886 Albert H. Beiler, Recreations in the Theory of Numbers (2d ed. 1966), p.139.
%H A328886 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (1,2,-2,-1,1).
%F A328886 a(n) = A039685(n)^2.
%t A328886 Select[Table[n*10^3+444,{n,50000}],IntegerQ[Sqrt[#]]&] (* _Harvey P. Dale_, Jun 19 2020 *)
%t A328886 Flatten[Table[500n+{38,-38},{n,0,20}]]^2//Union (* _Harvey P. Dale_, Jan 26 2025 *)
%o A328886 (PARI) a039685(n) = 250*n+87*(-1)^n-125
%o A328886 a(n) = a039685(n)^2
%Y A328886 Cf. A039685.
%K A328886 nonn,base,easy
%O A328886 1,1
%A A328886 _Felix Fröhlich_, Oct 29 2019